Various aspects of the disclosure relate to facilitating multiple hybrid automatic repeat request (HARQ) transmissions. For example, the teachings herein may be used for multiple HARQ transmissions in vehicle-to anything (V2X) communication or some other type of communication. The disclosure relates in some aspects to sending information indicative of the number of scheduling assignment (SA) symbols being sent by a device in conjunction with HARQ transmissions. The disclosure relates in some aspects to reserving resources for multiple HARQ transmissions and communicating an indication of the reserved HARQ resources.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of communication for an apparatus, comprising: determining a quantity of resource blocks to be used for a hybrid automatic repeat request (HARQ) transmission; selecting a quantity of scheduling assignment (SA) symbols to be used for the HARQ transmission, wherein the selection of the quantity of SA symbols to be used for the HARQ transmission is based on the determined quantity of resource blocks to be used for the HARQ transmission; sending information indicative of the determined quantity of resource blocks to be used for the HARQ transmission; and sending the selected quantity of SA symbols.
2. The method of claim 1 , wherein the information indicative of the determined quantity of resource blocks is sent via a Listen-Before-Talk (LBT) sequence.
3. The method of claim 1 , wherein each SA symbol comprises information for decoding data sent during the HARQ transmission.
4. The method of claim 1 , wherein the selection of the quantity of SA symbols comprises: comparing the determined quantity of resource blocks to a threshold; and identifying the quantity of SA symbols to be used based on the comparison.
5. The method of claim 4 , wherein the identification of the quantity of SA symbols comprises: electing to use a first quantity of the SA symbols if the determined quantity of resource blocks exceeds the threshold; or electing to use a second quantity of the SA symbols if the determined quantity of resource blocks does not exceed the threshold, wherein the second quantity is less than the first quantity.
6. The method of claim 1 , wherein the HARQ transmission comprises: sending data via a portion of the determined quantity of resource blocks.
7. A method of communication for an apparatus, comprising: receiving information indicative of a quantity of resource blocks to be received during a hybrid automatic repeat request (HARQ) operation; determining a quantity of scheduling assignment (SA) symbols to be received during the HARQ operation, wherein the determination of the quantity of SA symbols to be received during the HARQ operation is based on the quantity of resource blocks to be received during the HARQ operation; and receiving the determined quantity of SA symbols.
8. The method of claim 7 , wherein the information indicative of the quantity of resource blocks is received via a Listen-Before-Talk (LBT) sequence.
9. The method of claim 7 , wherein the determination of the quantity of SA symbols comprises: comparing the quantity of resource blocks to a threshold; and identifying the quantity of SA symbols to be received based on the comparison.
10. The method of claim 9 , wherein the identification of the quantity of SA symbols comprises: determining that a first quantity of the SA symbols will be received if the quantity of resource blocks exceeds the threshold; or determining that a second quantity of the SA symbols will be received if the quantity of resource blocks does not exceed the threshold, wherein the second quantity is less than the first quantity.
11. The method of claim 7 , wherein HARQ operation comprises: receiving data via a portion of the quantity of resource blocks after receiving the determined quantity of SA symbols.
12. A method of communication for an apparatus, comprising: determining a quantity of scheduling assignment (SA) symbols to be used for a hybrid automatic repeat request (HARQ) transmission; selecting a resource contention sequence to be used for the HARQ transmission from a plurality of different resource contention sequences, wherein the selection of the resource contention sequence to be used for the HARQ transmission is based on the determined quantity of SA symbols to be used for the HARQ transmission; and sending the resource contention sequence, wherein the resource contention sequence comprises an indication of a plurality of resource blocks used for the HARQ transmission.
13. The method of claim 12 , further comprising: sending the determined quantity of SA symbols after sending the resource contention sequence.
14. The method of claim 12 , wherein the selected resource contention sequence comprises a Listen-Before-Talk (LBT) sequence.
15. The method of claim 12 , wherein each SA symbol comprises information for decoding data sent during the HARQ transmission.
16. The method of claim 12 , wherein the selection of the resource contention sequence comprises: comparing the determined quantity of SA symbols to a threshold; and identifying the resource contention sequence to be used based on the comparison.
17. The method of claim 16 , wherein the identification of the resource contention sequence comprises: electing to use a resource contention sequence from a first set of resource contention sequences if the determined quantity of SA symbols exceeds the threshold; or electing to use a resource contention sequence from a second set of resource contention sequences if the determined quantity of SA symbols does not exceed the threshold.
18. The method of claim 12 , wherein the HARQ transmission comprises: sending data via a portion of the resource blocks after sending the resource contention sequence.
19. A method of communication for an apparatus, comprising: receiving a resource contention sequence, wherein the resource contention sequence comprises an indication of a plurality of resource blocks to be received during a hybrid automatic repeat request (HARQ) operation; identifying the resource contention sequence from a plurality of different resource contention sequences; determining a quantity of scheduling assignment (SA) symbols to be received during the HARQ operation, wherein the determination of the quantity of SA symbols to be received during the HARQ operation is based on the identification of the resource contention sequence; and receiving the determined quantity of SA symbols.
20. The method of claim 19 , wherein the resource contention sequence comprises a Listen-Before-Talk (LBT) sequence.
21. The method of claim 19 , wherein the determination of the quantity of SA symbols comprises: comparing the resource contention sequence to a mapping of resource contention sequences, wherein the mapping maps different sets of resource contention sequences to different quantities of SA symbols; and identifying the quantity of SA symbols to be received based on the comparison.
22. The method of claim 21 , wherein the identification of the quantity of SA symbols comprises: determining that a first quantity of the SA symbols will be received if the resource contention sequence maps to a first set of the sets of resource contention sequences; or determining that a second quantity of the SA symbols will be received if the resource contention sequence maps to a second set of the sets of resource contention sequences.
23. The method of claim 19 , wherein the HARQ operation comprises: receiving data via a portion of the resource blocks after receiving the determined quantity of SA symbols.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 22, 2018
August 11, 2020
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